Gearing for deep-well pumps



E. E. JOHNSON-- GEARING FOR DEEP WELL PUMPS. APPLICATION FILED JUNE 13, 1919. RENEWED NOV. 4. 1921.

Patented Dec. 12,1922.

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Edward fiifi'di? h's flffarneys.

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(BEARING FOB DEEP-"HELL PUll lPS.

Application filed June 18, 1919, Serial No. 303,904. Renewed November; 1921. v Serial No. 512,939.

g whom it may concern it known that I, EDWARD E. Jorrnson citizen of the United States, residing struction is provided, and racking and straining thereby reduced to a minimum. The subject matter disclosed in the present application is of the same general nature as that disclosed in my copendingapplications Sicrial Numbers 303,902 and 303,908, both liled June 13, 1919.

The i uii objects and advantages of my invention will appear in connection with the detailed description thereof and the novel teatures embodied in my inventive idea will be particu arly pointed out in the claims.

Referring to the accompanying drawings which illustrate the application of my invention in one iorm,-

Fig. l is a view in vertical sectional elevation. Fig. .2 part sectional and part elevational *iew at right angles to the position shown in Fig. 1.

Referring to the drawings, 10 designates a solid reciprocating rod, to the lowerend of which the lower pump plunger is secured as usual. hollow reciprocating rod 12 surrounds and is adapted to slide relati 'ely to the solid rod 10, and the upper pump plun-' J secured to the lower end 0% the hollow rod in customary manner. The upper end of the pump tubing is secured to a hollow supporting member 14: provided with an opening 16 for t is discharge pipe. The pump rods pass through a gland 17 secured in the top of the member let and the upper end of the hollow rod 12 is secured to a cross head member having two arms 18 to which are secured rods 20 having racks 22 attached to the upper ends thereof. The member 14; is suspended upon rods 2 the upper ends of which are attached to a spider 25 which is supported by the channel bars 27 upon which the pump head is mounted. The

no lateral movement.

pump.head is provided with bearings for a transverse driving shaft 26 to which are secured two pinions 28 which mesh with the external gears, 30 rotatably mounted upon a circuiarseries of roller bearings 32 which are located between an inner o'fi'set wall of the gears 30 and an outer wall of the internal ring gears 3% which are rigidly secured to the gear casin Spur gears 36 mesh with the internal gears 3e, the diameter of these spur gears being one-half the diameter of the internal gears. The spur gears 36 are rotatably mounted on the studs 38'attached to the gears 30, a circular series of roller bearings e0 being interposed between the studs ano the internal wall of the spur gears 36. The two spur gears 36 are connected by a crank-pin 42 which is positioned so that the center thereof extends between the pitch lines oi the gears 36. In operation the rotation or the gears 30 carries the gears 36 in an annular path thereby rolling them around within the internal gears 34. Since the latter ha ve a diameter twice that of the gears 36 the crank pin 42 moves in a straight line up and down, this line extending diametrally oi? the annular path. Journaled upon the crank pin is a bearing member to which the upper end of the solid pump rod 10 and the lower end of a double rack 4% are secured so as to be in vertical alinement with each other. The rod 10 and the rack M are therefore reciprocated in a straight line with Journaled at the upper end of th gear casing are pinions 48 which mesh with the double rack cand also with the racks 22 on their inner edges. Rollers 50 are also journaled in the casing and these rollers engage and support the outer edges of the racks 22 for a recipros cating movement. On account of this arrangement the rack eel and the racks 22 will be reciprocated in reverse directions and thereby reciprocate the pump rods 10 and 12 oppositely from each other.

I claim:

1. In pumping mechanism, a pair of pump rods and mechanism for operating the same, comprising a fixed internal gear, a member supported for rotation upon the outer wall of said internal gear, a spur gear rotatably mounted on said rotatable member and meshing with said internal gear and having a diameter half that of said internal gear. a crank pin secured to said spur gear and moved thereby along a diameter of said internal gear, oneof said pump rods having its upper end journaled on said crank pin, a double rack secured to said lastuiamed pump rod at its upper end, two racksconnected to the upper end of the other pump rod, and pinions interposed in meshing en gagement between said racks and the opposite toothed faces of the double rack.

2. In pumpinginechanism, a pair of pump rods and means for operating the same comprising a support, an internal gear fixed1y mounted thereon, a ring gear mounted for rotatlonaround said fixed gear, a spur gear carried by the r ng gear and meshing with the internal gear, means connecting one of said pump rods With the spur gearfor reciprocating the pump rod, a double rack extending away from the end of said last-named pump, rodjand, reciprocating therewith, a pair of racks connected with the second pump rod, and 'pinions operative between the sides of the double rack and the respective single racks for actuating the second pump rod in reverse direction to the movement of the first mentioned pump rod,

in testimony whereof I hereunto afiix ny signature.

EDWARDE; JOHNSON. 

